$(document).ready(function() {
    function filterPath(string) {
        return string
        .replace(/^\//,'')
        .replace(/(index|default).[a-zA-Z]{3,4}$/,'')
        .replace(/\/$/,'');
    }
    var locationPath = filterPath(location.pathname);
    $('a[href*=#]').each(function() {
    var thisPath = filterPath(this.pathname) || locationPath;
        if (  locationPath == thisPath && (location.hostname == this.hostname || !this.hostname) && this.hash.replace(/#/,'') ) {
            var $target = $(this.hash), target = this.hash;
            if (target) {
                var targetOffset = $target.offset().top;
                $(this).click(function(event) {
                    event.preventDefault();
                    $('html, body').animate({scrollTop: targetOffset}, 400, function() {
                        location.hash = target;
                    });
                });
            }
        }
    });
});